Mathematics for IGCSE & O level - Circle Theorems (Section 2 - No. 29)
What can be determined about the quadrilateral formed by two radii and two tangents from an external point to a circle?
It's always a square.
It's always a rectangle.
It's always a kite.
It's always a cyclic quadrilateral.
Giải thích
The shape is a kite, where two sides are the radii, and two sides are tangents.